Thanks, didn't know the book, looks like an interesting read. However, I think when you program the pattern you have already instantiated it, anyway. At least

Thanks, didn't know the book, looks like an interesting read. However, I think when you program the pattern you have already instantiated it, anyway. At least when you used it several times throughout your program. In those cases I think it's then better to explicitly abstract it away (i.e. tell the computer you are using the pattern).